That sucks, B, much moreso, Cory. Hope he mends quickly, Paul.
A big, maybe 44" cottonwood blew up last week at a park, so my super and I went there to do VTAs and resistographing a bunch of other medium to big cottonwoods in the same very wet, very highly used area. Looks like we are going to be in for a mud fest in February. Might get to run a track hoe, which I never have. We will be taking out a lot of big cottonwoods and a few smaller ash. Back when, over 20 years ago, these cottonwoods were topped, as was the conventional wisdom at the time. This was the first time I've been up there with the leaves off, and possibly the same for my super, so we didn't know about the old topping.
A warning shot with no casualties. A big wake up call for the manager, who had not hear about these CWs when he was told about them before. The 44" one had a 3-4" shell, and completely hollow inside. Stretch a skin over it and bang out some beats, 'cause yes, there are some sound holes at the bottom. If you don't look for problems, you don't see problems.